content/child/npapi/webplugin_delegate_impl.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/child/npapi/webplugin_delegate_impl.h"
   6
   7 #include <string>
   8 #include <vector>
   9
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/message_loop/message_loop.h"
  12 #include "base/process/process_handle.h"
  13 #include "base/strings/string_util.h"
  14 #include "base/strings/utf_string_conversions.h"
  15 #include "content/child/npapi/plugin_instance.h"
  16 #include "content/child/npapi/plugin_lib.h"
  17 #include "content/child/npapi/plugin_stream_url.h"
  18 #include "content/child/npapi/plugin_url_fetcher.h"
  19 #include "third_party/WebKit/public/web/WebInputEvent.h"
  20
  21 using blink::WebCursorInfo;
  22 using blink::WebInputEvent;
  23
  24 namespace content {
  25
  26 WebPluginDelegateImpl* WebPluginDelegateImpl::Create(
  27     WebPlugin* plugin,
  28     const base::FilePath& filename,
  29     const std::string& mime_type) {
  30   scoped_refptr<PluginLib> plugin_lib(PluginLib::CreatePluginLib(filename));
  31   if (plugin_lib.get() == NULL)
  32     return NULL;
  33
  34   NPError err = plugin_lib->NP_Initialize();
  35   if (err != NPERR_NO_ERROR)
  36     return NULL;
  37
  38   scoped_refptr<PluginInstance> instance(plugin_lib->CreateInstance(mime_type));
  39   return new WebPluginDelegateImpl(plugin, instance.get());
  40 }
  41
  42 void WebPluginDelegateImpl::PluginDestroyed() {
  43   if (handle_event_depth_) {
  44     base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
  45   } else {
  46     delete this;
  47   }
  48 }
  49
  50 bool WebPluginDelegateImpl::Initialize(
  51     const GURL& url,
  52     const std::vector<std::string>& arg_names,
  53     const std::vector<std::string>& arg_values,
  54     bool load_manually) {
  55   if (instance_->plugin_lib()->plugin_info().name.find(
  56           base::ASCIIToUTF16("QuickTime Plug-in")) != std::wstring::npos) {
  57     quirks_ |= PLUGIN_QUIRK_COPY_STREAM_DATA;
  58   }
  59
  60   instance_->set_web_plugin(plugin_);
  61   if (quirks_ & PLUGIN_QUIRK_DONT_ALLOW_MULTIPLE_INSTANCES) {
  62     PluginLib* plugin_lib = instance()->plugin_lib();
  63     if (plugin_lib->instance_count() > 1) {
  64       return false;
  65     }
  66   }
  67
  68   int argc = 0;
  69   scoped_ptr<char*[]> argn(new char*[arg_names.size()]);
  70   scoped_ptr<char*[]> argv(new char*[arg_names.size()]);
  71   for (size_t i = 0; i < arg_names.size(); ++i) {
  72     if (quirks_ & PLUGIN_QUIRK_NO_WINDOWLESS &&
  73         LowerCaseEqualsASCII(arg_names[i], "windowlessvideo")) {
  74       continue;
  75     }
  76     argn[argc] = const_cast<char*>(arg_names[i].c_str());
  77     argv[argc] = const_cast<char*>(arg_values[i].c_str());
  78     argc++;
  79   }
  80
  81   creation_succeeded_ = instance_->Start(
  82       url, argn.get(), argv.get(), argc, load_manually);
  83   if (!creation_succeeded_) {
  84     VLOG(1) << "Couldn't start plugin instance";
  85     return false;
  86   }
  87
  88   windowless_ = instance_->windowless();
  89   if (!windowless_) {
  90     if (!WindowedCreatePlugin()) {
  91       VLOG(1) << "Couldn't create windowed plugin";
  92       return false;
  93     }
  94   }
  95
  96   bool should_load = PlatformInitialize();
  97
  98   plugin_url_ = url.spec();
  99
 100   return should_load;
 101 }
 102
 103 void WebPluginDelegateImpl::DestroyInstance() {
 104   if (instance_.get() && (instance_->npp()->ndata != NULL)) {
 105     // Shutdown all streams before destroying so that
 106     // no streams are left "in progress".  Need to do
 107     // this before calling set_web_plugin(NULL) because the
 108     // instance uses the helper to do the download.
 109     instance_->CloseStreams();
 110
 111     window_.window = NULL;
 112     if (creation_succeeded_ &&
 113         !(quirks_ & PLUGIN_QUIRK_DONT_SET_NULL_WINDOW_HANDLE_ON_DESTROY)) {
 114       instance_->NPP_SetWindow(&window_);
 115     }
 116
 117     instance_->NPP_Destroy();
 118
 119     instance_->set_web_plugin(NULL);
 120
 121     PlatformDestroyInstance();
 122
 123     instance_ = 0;
 124   }
 125 }
 126
 127 void WebPluginDelegateImpl::UpdateGeometry(
 128     const gfx::Rect& window_rect,
 129     const gfx::Rect& clip_rect) {
 130
 131   if (first_set_window_call_) {
 132     first_set_window_call_ = false;
 133     // Plugins like media player on Windows have a bug where in they handle the
 134     // first geometry update and ignore the rest resulting in painting issues.
 135     // This quirk basically ignores the first set window call sequence for
 136     // these plugins and has been tested for Windows plugins only.
 137     if (quirks_ & PLUGIN_QUIRK_IGNORE_FIRST_SETWINDOW_CALL)
 138       return;
 139   }
 140
 141   if (windowless_) {
 142     WindowlessUpdateGeometry(window_rect, clip_rect);
 143   } else {
 144     WindowedUpdateGeometry(window_rect, clip_rect);
 145   }
 146 }
 147
 148 void WebPluginDelegateImpl::SetFocus(bool focused) {
 149   DCHECK(windowless_);
 150   // This is called when internal WebKit focus (the focused element on the page)
 151   // changes, but plugins need to know about OS-level focus, so we have an extra
 152   // layer of focus tracking.
 153   //
 154   // On Windows, historically browsers did not set focus events to windowless
 155   // plugins when the toplevel window focus changes. Sending such focus events
 156   // breaks full screen mode in Flash because it will come out of full screen
 157   // mode when it loses focus, and its full screen window causes the browser to
 158   // lose focus.
 159   has_webkit_focus_ = focused;
 160 #if !defined(OS_WIN)
 161   if (containing_view_has_focus_)
 162     SetPluginHasFocus(focused);
 163 #else
 164   SetPluginHasFocus(focused);
 165 #endif
 166 }
 167
 168 void WebPluginDelegateImpl::SetPluginHasFocus(bool focused) {
 169   if (focused == plugin_has_focus_)
 170     return;
 171   if (PlatformSetPluginHasFocus(focused))
 172     plugin_has_focus_ = focused;
 173 }
 174
 175 void WebPluginDelegateImpl::SetContentAreaHasFocus(bool has_focus) {
 176   containing_view_has_focus_ = has_focus;
 177   if (!windowless_)
 178     return;
 179 #if !defined(OS_WIN)  // See SetFocus above.
 180   SetPluginHasFocus(containing_view_has_focus_ && has_webkit_focus_);
 181 #endif
 182 }
 183
 184 NPObject* WebPluginDelegateImpl::GetPluginScriptableObject() {
 185   return instance_->GetPluginScriptableObject();
 186 }
 187
 188 NPP WebPluginDelegateImpl::GetPluginNPP() {
 189   return instance_->npp();
 190 }
 191
 192 bool WebPluginDelegateImpl::GetFormValue(base::string16* value) {
 193   return instance_->GetFormValue(value);
 194 }
 195
 196 void WebPluginDelegateImpl::DidFinishLoadWithReason(const GURL& url,
 197                                                     NPReason reason,
 198                                                     int notify_id) {
 199   if (quirks_ & PLUGIN_QUIRK_ALWAYS_NOTIFY_SUCCESS &&
 200       reason == NPRES_NETWORK_ERR) {
 201     // Flash needs this or otherwise it unloads the launching swf object.
 202     reason = NPRES_DONE;
 203   }
 204
 205   instance()->DidFinishLoadWithReason(url, reason, notify_id);
 206 }
 207
 208 int WebPluginDelegateImpl::GetProcessId() {
 209   // We are in process, so the plugin pid is this current process pid.
 210   return base::GetCurrentProcId();
 211 }
 212
 213 void WebPluginDelegateImpl::SendJavaScriptStream(const GURL& url,
 214                                                  const std::string& result,
 215                                                  bool success,
 216                                                  int notify_id) {
 217   instance()->SendJavaScriptStream(url, result, success, notify_id);
 218 }
 219
 220 void WebPluginDelegateImpl::DidReceiveManualResponse(
 221     const GURL& url, const std::string& mime_type,
 222     const std::string& headers, uint32 expected_length, uint32 last_modified) {
 223   if (!windowless_) {
 224     // Calling NPP_WriteReady before NPP_SetWindow causes movies to not load in
 225     // Flash.  See http://b/issue?id=892174.
 226     DCHECK(windowed_did_set_window_);
 227   }
 228
 229   instance()->DidReceiveManualResponse(url, mime_type, headers,
 230                                        expected_length, last_modified);
 231 }
 232
 233 void WebPluginDelegateImpl::DidReceiveManualData(const char* buffer,
 234                                                  int length) {
 235   instance()->DidReceiveManualData(buffer, length);
 236 }
 237
 238 void WebPluginDelegateImpl::DidFinishManualLoading() {
 239   instance()->DidFinishManualLoading();
 240 }
 241
 242 void WebPluginDelegateImpl::DidManualLoadFail() {
 243   instance()->DidManualLoadFail();
 244 }
 245
 246 base::FilePath WebPluginDelegateImpl::GetPluginPath() {
 247   return instance()->plugin_lib()->plugin_info().path;
 248 }
 249
 250 void WebPluginDelegateImpl::WindowedUpdateGeometry(
 251     const gfx::Rect& window_rect,
 252     const gfx::Rect& clip_rect) {
 253   if (WindowedReposition(window_rect, clip_rect) ||
 254       !windowed_did_set_window_) {
 255     // Let the plugin know that it has been moved
 256     WindowedSetWindow();
 257   }
 258 }
 259
 260 bool WebPluginDelegateImpl::HandleInputEvent(
 261     const WebInputEvent& event,
 262     WebCursor::CursorInfo* cursor_info) {
 263   DCHECK(windowless_) << "events should only be received in windowless mode";
 264
 265   bool pop_user_gesture = false;
 266   if (IsUserGesture(event)) {
 267     pop_user_gesture = true;
 268     instance()->PushPopupsEnabledState(true);
 269   }
 270
 271   bool handled = PlatformHandleInputEvent(event, cursor_info);
 272
 273   if (pop_user_gesture) {
 274     instance()->PopPopupsEnabledState();
 275   }
 276
 277   return handled;
 278 }
 279
 280 bool WebPluginDelegateImpl::IsUserGesture(const WebInputEvent& event) {
 281   switch (event.type) {
 282     case WebInputEvent::MouseDown:
 283     case WebInputEvent::MouseUp:
 284     case WebInputEvent::KeyDown:
 285     case WebInputEvent::KeyUp:
 286       return true;
 287     default:
 288       return false;
 289   }
 290 }
 291
 292 WebPluginResourceClient* WebPluginDelegateImpl::CreateResourceClient(
 293     unsigned long resource_id, const GURL& url, int notify_id) {
 294   return instance()->CreateStream(
 295       resource_id, url, std::string(), notify_id);
 296 }
 297
 298 WebPluginResourceClient* WebPluginDelegateImpl::CreateSeekableResourceClient(
 299     unsigned long resource_id, int range_request_id) {
 300   WebPluginResourceClient* resource_client = instance()->GetRangeRequest(
 301       range_request_id);
 302   if (resource_client)
 303     resource_client->AddRangeRequestResourceId(resource_id);
 304   return resource_client;
 305 }
 306
 307 void WebPluginDelegateImpl::FetchURL(unsigned long resource_id,
 308                                      int notify_id,
 309                                      const GURL& url,
 310                                      const GURL& first_party_for_cookies,
 311                                      const std::string& method,
 312                                      const char* buf,
 313                                      unsigned int len,
 314                                      const Referrer& referrer,
 315                                      bool notify_redirects,
 316                                      bool is_plugin_src_load,
 317                                      int origin_pid,
 318                                      int render_frame_id,
 319                                      int render_view_id) {
 320   // TODO(jam): once we switch over to resource loading always happening in this
 321   // code path, remove WebPluginResourceClient abstraction.
 322   PluginStreamUrl* plugin_stream = instance()->CreateStream(
 323       resource_id, url, std::string(), notify_id);
 324
 325   bool copy_stream_data = !!(quirks_ & PLUGIN_QUIRK_COPY_STREAM_DATA);
 326   plugin_stream->SetPluginURLFetcher(new PluginURLFetcher(
 327       plugin_stream, url, first_party_for_cookies, method, buf, len,
 328       referrer, std::string(), notify_redirects, is_plugin_src_load, origin_pid,
 329       render_frame_id, render_view_id, resource_id, copy_stream_data));
 330 }
 331
 332 }  // namespace content